/* static */ void
IDecodingTask::NotifyDecodeComplete(NotNull<RasterImage*> aImage,
NotNull<Decoder*> aDecoder)
{
MOZ_ASSERT(aDecoder->HasError() || !aDecoder->InFrame(),
"Decode complete in the middle of a frame?");
// Capture the decoder's state.
DecoderFinalStatus finalStatus = aDecoder->FinalStatus();
ImageMetadata metadata = aDecoder->GetImageMetadata();
DecoderTelemetry telemetry = aDecoder->Telemetry();
Progress progress = aDecoder->TakeProgress();
IntRect invalidRect = aDecoder->TakeInvalidRect();
Maybe<uint32_t> frameCount = aDecoder->TakeCompleteFrameCount();
SurfaceFlags surfaceFlags = aDecoder->GetSurfaceFlags();
// Synchronously notify if we can.
if (NS_IsMainThread() &&
!(aDecoder->GetDecoderFlags() & DecoderFlags::ASYNC_NOTIFY)) {
aImage->NotifyDecodeComplete(finalStatus, metadata, telemetry, progress,
invalidRect, frameCount, surfaceFlags);
return;
}
// We're forced to notify asynchronously.
NotNull<RefPtr<RasterImage>> image = aImage;
NS_DispatchToMainThread(NS_NewRunnableFunction([=]() -> void {
image->NotifyDecodeComplete(finalStatus, metadata, telemetry, progress,
invalidRect, frameCount, surfaceFlags);
}));
}
/* static */ void
IDecodingTask::NotifyProgress(NotNull<RasterImage*> aImage,
NotNull<Decoder*> aDecoder)
{
MOZ_ASSERT(aDecoder->HasProgress() && !aDecoder->IsMetadataDecode());
// Capture the decoder's state. If we need to notify asynchronously, it's
// important that we don't wait until the lambda actually runs to capture the
// state that we're going to notify. That would both introduce data races on
// the decoder's state and cause inconsistencies between the NotifyProgress()
// calls we make off-main-thread and the notifications that RasterImage
// actually receives, which would cause bugs.
Progress progress = aDecoder->TakeProgress();
IntRect invalidRect = aDecoder->TakeInvalidRect();
Maybe<uint32_t> frameCount = aDecoder->TakeCompleteFrameCount();
SurfaceFlags surfaceFlags = aDecoder->GetSurfaceFlags();
// Synchronously notify if we can.
if (NS_IsMainThread() &&
!(aDecoder->GetDecoderFlags() & DecoderFlags::ASYNC_NOTIFY)) {
aImage->NotifyProgress(progress, invalidRect,
frameCount, surfaceFlags);
return;
}
// We're forced to notify asynchronously.
NotNull<RefPtr<RasterImage>> image = aImage;
NS_DispatchToMainThread(NS_NewRunnableFunction([=]() -> void {
image->NotifyProgress(progress, invalidRect,
frameCount, surfaceFlags);
}));
}
static void
NotifyProgress(NotNull<Decoder*> aDecoder)
{
MOZ_ASSERT(aDecoder->HasProgress() && !aDecoder->IsMetadataDecode());
Progress progress = aDecoder->TakeProgress();
IntRect invalidRect = aDecoder->TakeInvalidRect();
Maybe<uint32_t> frameCount = aDecoder->TakeCompleteFrameCount();
SurfaceFlags surfaceFlags = aDecoder->GetSurfaceFlags();
// Synchronously notify if we can.
if (NS_IsMainThread() &&
!(aDecoder->GetDecoderFlags() & DecoderFlags::ASYNC_NOTIFY)) {
aDecoder->GetImage()->NotifyProgress(progress, invalidRect,
frameCount, surfaceFlags);
return;
}
// We're forced to notify asynchronously.
NotNull<RefPtr<Decoder>> decoder = aDecoder;
NS_DispatchToMainThread(NS_NewRunnableFunction([=]() -> void {
decoder->GetImage()->NotifyProgress(progress, invalidRect,
frameCount, surfaceFlags);
}));
}
/* static */ void
IDecodingTask::NotifyProgress(NotNull<Decoder*> aDecoder)
{
MOZ_ASSERT(aDecoder->HasProgress() && !aDecoder->IsMetadataDecode());
// Synchronously notify if we can.
if (NS_IsMainThread() &&
!(aDecoder->GetDecoderFlags() & DecoderFlags::ASYNC_NOTIFY)) {
aDecoder->GetImage()->NotifyProgress(aDecoder->TakeProgress(),
aDecoder->TakeInvalidRect(),
aDecoder->GetSurfaceFlags());
return;
}
// We're forced to notify asynchronously.
NotNull<RefPtr<Decoder>> decoder = aDecoder;
NS_DispatchToMainThread(NS_NewRunnableFunction([=]() -> void {
decoder->GetImage()->NotifyProgress(decoder->TakeProgress(),
decoder->TakeInvalidRect(),
decoder->GetSurfaceFlags());
}));
}
/* static */ already_AddRefed<Decoder>
DecoderFactory::CreateDecoderForICOResource(DecoderType aType,
SourceBufferIterator&& aIterator,
NotNull<nsICODecoder*> aICODecoder,
bool aIsMetadataDecode,
const Maybe<IntSize>& aExpectedSize,
const Maybe<uint32_t>& aDataOffset
/* = Nothing() */)
{
// Create the decoder.
RefPtr<Decoder> decoder;
switch (aType) {
case DecoderType::BMP:
MOZ_ASSERT(aDataOffset);
decoder = new nsBMPDecoder(aICODecoder->GetImageMaybeNull(), *aDataOffset);
break;
case DecoderType::PNG:
MOZ_ASSERT(!aDataOffset);
decoder = new nsPNGDecoder(aICODecoder->GetImageMaybeNull());
break;
default:
MOZ_ASSERT_UNREACHABLE("Invalid ICO resource decoder type");
return nullptr;
}
MOZ_ASSERT(decoder);
// Initialize the decoder, copying settings from @aICODecoder.
decoder->SetMetadataDecode(aIsMetadataDecode);
decoder->SetIterator(Forward<SourceBufferIterator>(aIterator));
if (!aIsMetadataDecode) {
decoder->SetOutputSize(aICODecoder->OutputSize());
}
if (aExpectedSize) {
decoder->SetExpectedSize(*aExpectedSize);
}
decoder->SetDecoderFlags(aICODecoder->GetDecoderFlags());
decoder->SetSurfaceFlags(aICODecoder->GetSurfaceFlags());
decoder->SetFinalizeFrames(false);
if (NS_FAILED(decoder->Init())) {
return nullptr;
}
return decoder.forget();
}
